how to calculate the key space for 4d rossler system, i wanted to use x,y,z,w as key in image encryption technique, for that i have to calculate the key space.
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x(1)=-10;y(1)=-6;z(1)=0;w(1)=10;
a= 0.2500;b= 3; c= 0.5000;d= 0.0500;dt= 0.0025;
%%---------4d rossler hyperchaotic system-----------
for i=1:1:3*3000000
x(i+1) = x(i) + dt*(-y(i)-z(i));
y(i+1) = y(i) + dt*(x(i) + (a*y(i)) +w(i));
z(i+1) = z(i) + dt*(b+x(i).*z(i));
w(i+1) = w(i) + dt*(-c.*z(i)+d.*w(i));
end
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KALYAN ACHARJYA
2018년 12월 26일
There is no coding error, but the iterations number is too high? Is their any problem, can you elaborate more?
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